Electrical issues from poor hookups at campsite

My husband need some legal advice after a terrible experience at a Sun Outdoors in Cape Charles Virginia. We arrived at the campsite on a Sunday afternoon. Only a few hrs after hooking everything up the campgrounds experienced a power outage. We use a surge protector every trip and it was hooked up at this site. During the outage we tried to switch over to our on board generator. We then noticed power couldn't be restored to most of our electronics even with the generator on. My husband is very handy and works with electrical equipment regularly for his job as an elevator mechanic. Many of our electronics haven't been about to work since the surge. We have am rv mechanic we work with at home and will have him assess the situation but I don't want to be held responsible for the damage caused by their electrical issues. Can anyone help point us in the right direction? I posted a picture of the electrical box which flooded the second night of our stay with only a few hrs worth of rain.

 

Thanks so much for your reply. We did unplug as soon as we knew the power went out. My husband did check all the breakers and fuses but we can't find the source of the problem yet. We will have our rv guy look at it when we get back home. I will try to find an attorney who specializes in rv damages.